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MED158 CH. 9-10
| Question | Answer |
|---|---|
| The following blood component can be elevated with moderate exercise? | Glucose Creatinine Total Protein |
| If blood is drawn too quickly from a small vein, the vein will have a tendency to | Collapse |
| What is the term that means related to or marked by jaundice and is used to describe serum, plasma, or urine specimens that have an abnormal deep yellow-brown color due to high bilirubin levels? | Icteric |
| A phlebotomist has attempted twice to draw a partial thromboplastin time (PTT) specimen from a patient with difficult veins. Both times the phlebotomist has been able to draw only a partial tube. What should the phlebotomist do? | Have another phlebotomist attempt to draw the specimen |
| Some patients become faint at just the thought or sight of the blood being drawn. There are many other contributing factors that can cause a patient to faint. What should a phlebotomist due in case his/her patient faints? | Talk to the patient and reassure them Protect patient from injury by physically supporting them Apply a cold compress to forehead or back of neck |
| Why are capillary blood gases less desirable than arterial blood gases (ABGs)? | skin puncture blood contains tissue fluid. Skin puncture blood is only partly arterial in composition the blood is exposed to air during collection |
| Which instance most closely resembles basal state? A patient who has | Just awakened at 0600 after fasting all night |
| The following area/s should not be punctured during a heel puncture? | Arch Bruised areas Posterior curvature of the heel |
| Why do pregnant patients have lower reference ranges for red blood cell counts? | Blood fluid increases in pregnancy, having a diluting effect on red blood cells |
| The purpose of wiping away the first drop of blood during skin puncture is | To eliminate tissue fluid contamination |
| Which of the following is the safest area for infant heel puncture? | The lateral or medial plantar surface |
| A blood smear made from an EDTA (Lavender top) should be made | Within 1 hour of collection |
| You must draw a protime specimen from a patient with IVs in both arms. Which of the following is the best thing to do? Draw the specimen | Distal to an IV |
| Skin puncture blood reference values (normal) are higher for | Glucose |
| Why is EDTA (lavender) specimens obtained before other specimens when collected by skin puncture/ | To minimize effects of platelet clumping |
| The following are lab test that cannot be collected using a capillary puncture except? | Hematocrit (Hct) |
| What is an example of a lab test that a Thick Blood smear preparation test would be used? (Thick blood smear is a drop of blood on slide as big as nickel or quarter) | Malaria |
| Prolonged tourniquet application may cause a change in blood composition primarily because of | Hemoconcentration |
| Tiny red spots (Petechiae) that appear on a patient's arm when the tourniquet is applied are a sign that the | Site may bleed excessively |
| What are special small plastic tubes used to collect the tiny amounts of blood obtained from skin puncture, often referred to as "bullet" tubes? | Microcollection tubes |
| When the arm of the patient is swollen with excess fluid, the condition is called | Edema |
| Why would a phlebotomist resist drawing blood from an area that has become endemic because of an IV infiltrating surrounding tissues with fluid? | Inaccurate results because contamination with tissue fluid Veins are harder to locate Easily injured by tourniquet, delay healing |
| When a test requires a fasting specimen, but the serum is _______________, it is a clue that the patient was not fasting. | Lipemic |
| Which of the following situations can result in hemoconcentration? | Leaving the tourniquet on over 1 minute |
| Do not perform a skin puncture parallel to the grooves or lines of the fingerprint. A parallel puncture will allow the blood to flow __________________. | Down the finger preventing the formation of a rounded drop |
| It is necessary to control depth of lancet insertion during skin puncture to avoid | Bone injury |
| Why should a laboratory report form indicate the fact that a specimen has been collected using skin puncture? | Because test results may vary depending on the method of collection |
| Which instance may lead you to suspect that you have accidentally punctured an artery? | The blood pulses into the tube |
| What type of tube is typically used to collect a baby Bilirubin specimen? | amber-color microcollection tube |
| Which of the following tests is most often a timed test? | Therapeutic drug monitoring (TDM) |
| You have no choice but to draw a specimen from a site with a hematoma. Where should you obtain the specimen? | Distal to the hematoma |
| When a fasting specimen is need for a lipid test, what is the typically time for fasting? | 8-12 hours |
| What is the purpose of warming the site before skin puncture? | It increases blood flow up to seven times |
| What type of tube might you use if you know the patient is a hard stick with veins that might collapse for a PTT test? | Short draw light blue top tube |
| How long before obtaining blood for testing should drugs known to interfere with blood tests be discontinued? | 4 to 24 hours |
| What does the term "calcaneus" mean? | Heel bone |
| What is the Clinical and Laboratory Standards Institute (CLSI) recommended maximum depth of heel puncture? Which color top microcollection container would be used to collect a specimen for a CBC? | 2.0 mm |
| Which color top microcollection container would be used to collect a specimen for a CBC? | Lavender top |
| What is Phenylketonuria (PKU) lab test? | A genetic disorder characterized by the inability to metabolize pheylatlanine |
| A skin puncture should be done rather than a venipuncture in all of the following situations except | When a light blue stopper tube is needed |
| All of the following are procedures in collection of a microcollection container while doing skin puncture except? | Use a scooping motion against the surface of the skin |
| All the following are procedural errors that can occur except? | The needle being seated into the vein |
| It is not a good idea to collect a CBC specimen from a screaming infant because the | White blood count may be falsely elevated |
| The results used for comparison become a range of values with high and low limits, commonly called? | Reference range |
| What is the most common complication of venipuncture? | Hematoma |
| When doing a skin puncture on a young child how might you hold their hand? | Hold onto three to four fingers to prevent child from moving |
| Which of the following vascular access devices is inserted in the peripheral venous system for the purpose of blood collection and administration of medication? | Heparin lock |
| A fistula is a(n): | Permanent fusion of an artery and a vein |
| The National Cholesterol Education Program recommends that lipid profiles be collected in a consistent manner after the patient has been either lying down or sitting quietly for a minimum of how many minutes? | 5 minutes |
| Skin puncture blood most closely resembles | Arterial blood |
Created by:
Nisha97